Fix: Adjust FiberTransport to lowdown latency in busrt tcp connect scenario

[hzlushiliang]

• Lowdown log level when TcpConnection ReadIoData error

[codecov]

Codecov Report

Merging #66 (535f22c) into main (41485d6) will decrease coverage by 0.01342%.
Report is 2 commits behind head on main.
The diff coverage is 85.00000%.

Additional details and impacted files

@@                 Coverage Diff                 @@
##                main         #66         +/-   ##
===================================================
- Coverage   81.61992%   81.60650%   -0.01342%     
===================================================
  Files            854         854                 
  Lines          33656       33713         +57     
===================================================
+ Hits           27470       27512         +42     
- Misses          6186        6201         +15     

Files	Coverage Δ
trpc/common/config/global_conf.cc	100.00000% <100.00000%> (ø)
trpc/common/config/global_conf.h	100.00000% <ø> (ø)
.../runtime/iomodel/reactor/default/tcp_connection.cc	90.65421% <100.00000%> (ø)
...me/threadmodel/fiber/detail/stack_allocator_impl.h	100.00000% <ø> (ø)
...sport/client/fiber/fiber_connector_group_manager.h	100.00000% <ø> (ø)
trpc/common/config/global_conf_parser.h	66.02564% <50.00000%> (-0.20814%)	⬇️
...port/client/fiber/fiber_connector_group_manager.cc	92.94118% <86.66667%> (-1.56431%)	⬇️
trpc/transport/client/fiber/fiber_transport.cc	91.89189% <77.27273%> (-0.26497%)	⬇️
...e/threadmodel/fiber/detail/stack_allocator_impl.cc	90.90909% <87.50000%> (-0.88195%)	⬇️

... and 17 files with indirect coverage changes